Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Multiple Choice Questions
Q41: What is the role of the focusing system in a CRT?
- A: Brighten the image
- B: Enlarge the screen
- C: Converge electron beam
- D: Accelerate electrons
View Answer
C
Q42: Magnetic lens focusing is preferred in:
- A: Black and white TVs
- B: Special purpose devices
- C: Mobile screens
- D: Standard monitors
View Answer
B
Q43: What does 'aspect ratio' in graphics refer to?
- A: Monitor height to width
- B: Screen resolution
- C: Vertical to horizontal points ratio
- D: Dot pitch
View Answer
C
Q44: Which phosphor property affects how long the image remains on screen?
- A: Brightness
- B: Contrast
- C: Persistence
- D: Saturation
View Answer
C
Q45: What is a pixel in raster graphics?
- A: A frame
- B: A dot matrix
- C: The smallest addressable screen element
- D: Line segment
View Answer
C
Q46: A frame buffer storing black and white image uses how many bits per pixel?
- A: 8
- B: 1
- C: 4
- D: 16
View Answer
B
Q47: What is the name of a frame buffer used for color images with multiple bits per pixel?
- A: Bitmap
- B: ColorMap
- C: PixelMap
- D: Pixmap
View Answer
D
Q48: In raster scan, what is the process of returning the beam to the left of the next line called?
- A: Vertical retrace
- B: Refresh
- C: Horizontal retrace
- D: Frame redraw
View Answer
C
Q49: In interlaced scanning, how are lines drawn?
- A: In one top-down pass
- B: From center outward
- C: In two passes (odd and even)
- D: Randomly
View Answer
C
Q50: Random-scan systems are also known as:
- A: Bitmap displays
- B: Frame-buffer displays
- C: Vector displays
- D: Raster displays
View Answer
C